Wilson Limited applied the straight-line method of depreciation to its non-current

assets. The cost of the buildings was $640 000, the depreciable amount is $560 000,

the residual value is $80 000 and the useful life is 8 years. The annual depreciation

charge is:

a) $80 000.

b) $75 000.

c) $70 000.

d) $60 000